body {
  overflow-x: hidden;
  overflow-y: hidden;
}
body .head {
  height: 50px;
  width: 100%;
}
body .main {
  height: 100%;
  width: 100%;
  background: url(../../assets//imgs/advertisement-bg.jpg) no-repeat center;
  background-size: cover;
  position: relative;
}
body .main .ad_tm {
  position: absolute;
  height: 40px;
  width: 105px;
  background: white;
  border: 1px solid #bbbbbb;
  border-radius: 20px;
  right: 14px;
  top: 20px;
}
body .main .ad_tm .time {
  height: 30px;
  width: 40px;
  border-right: 1px solid #bbbbbb;
}
body .main .ad_tm .tiaoguo {
  height: 30px;
  width: 55px;
}
body .main .donghua {
  position: absolute;
  width: 280px;
  font-size: 36px;
  color: white;
  top: 80%;
  left: 20%;
}
